The most endangered species in the world seems to be the independent crime book store, including this one and others talked about by book people including Sarah Weinman and many others.
I use Amazon on my own blog, mostly because it's a way to get the new paperback covers on line for a non-geek like me -- and also the chance to make a (very) few bucks. Many other crime bloggers do the same.
But the point of this post is to say very loudly that if you're anywhere near an independent book store, PLEASE buy your books there -- no matter where you first see, hear or read about them. You'll feel much better about it when you do.